Siemens 6AV6446-4AA40-2AY3 SIMATIC MP 370

Name: Siemens 6AV6446-4AA40-2AY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-4AA40-2AY3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-4AA40-2AY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-4AA40-2AY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding visualization and operator control tasks in industrial automation environments. This panel features a 15-inch TFT display and is part of the MP 370 series, which represents a high-performance class of Siemens HMI panels capable of running WinCC flexible runtime software. It is a panel PC-class device intended for use as a stationary operator interface in machine and plant control systems.

The MP 370 panel is equipped with a 15-inch color TFT display with a resolution of 1024 x 768 pixels (XGA), supporting 64,000 colors for clear process visualization. It features a resistive touch screen interface as well as a membrane keyboard, providing flexible operator input options. The unit communicates via MPI, PROFIBUS DP, and Ethernet (TCP/IP) interfaces, enabling integration into a wide range of Siemens and third-party control architectures. An integrated CompactFlash card slot provides expandable storage, and the panel runs on a Windows CE operating system with WinCC flexible runtime for configuration and visualization.

The SIMATIC MP 370 is widely deployed in manufacturing, automotive, food and beverage, chemical, and process industries where a large-format, robust operator panel is required. Its combination of touch and key input, multiple communication interfaces, and compatibility with SIMATIC S7 PLCs makes it suitable for complex HMI applications requiring high screen resolution and reliable long-term operation in industrial cabinet or panel installations.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	64,000 colors
Display Type	TFT color LCD
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 40 W
Operating System	Windows CE
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Storage	CompactFlash card slot
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP Rating (Front)	IP65
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 1000001: Configuration error detected during startup; the project file may be corrupted or incompatible with the runtime version.
Re-transfer the project from the engineering PC using WinCC flexible. Ensure the runtime version on the panel matches the project version.
Event ID: 1000002: Communication connection to the PLC has been lost or cannot be established.
Check MPI/PROFIBUS or Ethernet cabling and connectors. Verify PLC address settings and communication parameters in the WinCC flexible project.
Event ID: 1000003: Tag read/write error; a configured variable cannot be accessed on the controller.
Verify the tag address in the WinCC flexible configuration. Confirm the PLC program contains the corresponding data block or memory address.
Event ID: 1000004: System memory low; available RAM on the panel is insufficient for current runtime operations.
Reduce the number of active screens or objects. Check for memory leaks in scripts. Consider reducing project complexity or restarting the panel.
Event ID: 1000005: CompactFlash card not detected or read/write error on the storage medium.
Reseat the CompactFlash card. Replace the card if it is faulty. Ensure the card is formatted correctly and has sufficient free space.
Event ID: 1000006: Backup battery low or discharged; real-time clock data may be lost after power off.
Replace the internal backup battery. Refer to the MP 370 operating instructions for battery replacement procedure and battery type specification.
Event ID: 1000007: Printer communication error; the configured printer cannot be reached or does not respond.
Check the printer connection cable and port settings. Verify the printer driver configuration in the Control Panel of the Windows CE environment.
Event ID: 1000008: Screen saver or operating system watchdog timeout triggered; panel has restarted unexpectedly.
Check for excessive CPU load caused by scripts or animations. Update the panel firmware to the latest version and review script efficiency in the project.

Frequently Asked Questions

What software is used to configure and program the MP 370 panel?

The MP 370 is configured using Siemens WinCC flexible engineering software. The project is then transferred to the panel via Ethernet, MPI, or USB connection.

Which Siemens PLCs are compatible with the SIMATIC MP 370?

The MP 370 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP, and with S7-300/400 via Ethernet. It also supports communication with third-party controllers using standard protocols.

What is the supply voltage for the 6AV6446-4AA40-2AY3?

The panel operates on 24 V DC supply voltage, which is standard for SIMATIC HMI panels and compatible with typical industrial control cabinet power supplies.

Does the MP 370 support both touch and key input?

Yes, the MP 370 15-inch variant supports both a resistive touch screen and a membrane keyboard, allowing flexible operator input depending on the application requirements.

What is the front panel protection rating of the MP 370?

The front panel of the MP 370 carries an IP65 protection rating, making it suitable for installation in environments where dust and water jets may be present.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply connector. Measure voltage at the panel terminals. Inspect the internal fuse if accessible.

Restore correct 24 V DC supply. If voltage is correct and display remains blank, the backlight inverter or display unit may be faulty and require replacement.

Panel fails to establish communication with the PLC

Verify MPI or PROFIBUS address settings on both the panel and PLC. Check cable integrity and termination resistors on the bus. Confirm Ethernet IP address configuration if using TCP/IP.

Correct address mismatches in the WinCC flexible project settings. Replace damaged cables or connectors. Ensure bus termination is applied only at the physical ends of the network.

Touch screen does not respond or responds inaccurately

Attempt to recalibrate the touch screen via the Windows CE Control Panel or the SIMATIC HMI startup menu. Check for physical damage or contamination on the screen surface.

Perform a touch screen recalibration. Clean the screen surface with a soft, dry cloth. If calibration fails repeatedly, the touch panel overlay may need to be replaced.

Panel restarts unexpectedly or freezes during operation

Check for excessive CPU load from scripts or complex animations in the WinCC flexible project. Review the system event log on the panel for watchdog or memory-related events.

Optimize scripts to reduce processing load. Update the panel firmware to the latest compatible version. If the issue persists, perform a clean re-transfer of the project and consider a factory reset.

Project transfer from engineering PC fails

Verify the transfer channel settings in WinCC flexible match the physical connection used (Ethernet, MPI, or USB). Confirm the panel is in transfer mode and not running the runtime application.

Set the panel to transfer mode via the startup menu. Ensure firewall settings on the PC do not block the transfer. Re-check IP address or MPI address configuration on both devices.

Condition	Repair, Used, Refurbished, New in box (sealed)